Density: 1. Which is more dense, water or wood? How do you know?

Slides:

Advertisements

Similar presentations

Section 2: Floating and Sinking How can you predict whether an object will float or sink in a fluid? What is the effect of the buoyant force?

Advertisements

Chapter 11 – Forces in Fluids

IPC Notes Density. density – the mass of an object per unit volume ex) the density of a substance describes how tightly packed the molecules are.

Density Chapter 1 Matter, Measurements, & Calculations Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings.

TOPIC: Measurement Aim:: What is mass and how is it measured? Do Now: Explain the difference between volume and mass. HW: Create 20 Density problems.

Density. What is It? Derived unit which shows the mass per unit of volume More dense materials are “heavier” than less dense materials Density compares.

Objective: To calculate density.. - Volume of a cube or block = length x width x height - Volume of irregular shaped object = use water displacement.

1 1.8 Density Chapter 1Measurements Copyright © 2009 by Pearson Education, Inc.

Measuring Matter 6 Beta Measuring Matter Which weighs more, a pound of feathers or a pound of sand? Which weighs more, a pound of feathers or a.

Characteristic Physical Properties

If objects are the same size they will have the same density. Different materials have different densities. Density is made up of two other measurements.

Density by. Density is _______per unit _______ of a material D = m ÷___ m = ___x___ v = m ÷ ____ D = _____ g/mL or g/cm 3 m = ____in grams L = length.

The density is the ratio of mass (stuff that makes up an object) and its volume (the amount of space that stuff takes up). The more mass an object has.

Hosted by Mrs. Sowa Density Equation Graphs Matter Models Measuring m and V

1 2.8 Density Chapter 2Measurements Copyright © 2008 by Pearson Ed ucation, Inc. Publishing as Benjamin Cummings.

Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh Edition Copyright © 2012 by Pearson Education, Inc. Chapter 1 Chemistry.

Bellringer  Calculate the following 9.0 x x

+ Density Austin High School Chemistry Ms. Gutierrez

Density Formula: Density = Mass ÷ Volume Standard Unit =

Measurement-A Common Language Density The measure of how much mass is contained in a given volume.

Bell Ringer O Convert the following measurement: 130 g = _______________mg.

“The Density Equation” Mass (g) Volume (mL or cm 3 ) Density (g/mL or g/cm 3 )

In the figure to the left the blue dots are the matter (particles/atoms/molecules) which will add to the mass of the object. The amount of space the box.

1. Which is more dense, water or wood? How do you know? 2. Which is more dense, 1 pound of lead or 100 pounds of lead? Wood, if it sinks in water. SAME!

Floating and Sinking.  Density is a measure of how closely packed the atoms in a substance are  Density is a physical property  All matter has measurable.

WHAT IS DENSITY One of the most important physical properties of a substance is its density, or what is mass per unit volume. The property of density may.

Density. What weighs more… A pound of lead or a pound of feathers? There is a relationship between an objects mass and its volume. Density: the ratio.

WU 9/7 1.How many sig. figs are in these measurements? a) g b L c mg d e s 2.Perform the following calculations:

Density is the amount of mass in a specific volume cm 3.

1 2.8 Density Density Calculations Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings.

Section 3.3—Density Do you want high or low density in your airbag?

Introduction to Matter Lecture: Calculating Density.

Density DEF: amount of mass in a certain volume. Density is a physical property. Solids have the highest density. Gases have the lowest density. The density.

Density Density is the measure of how much mass is contained in a given volume * density is made up of two measurements mass and volume, so the density.

Mass vs volume Density.

Density Section 2.1 Measurement of how packed or crowed object is Ratio of mass to volume.

Which of these objects will float and which will sink in water?

How can you compare the densities of liquids without calculations?

Topic: Measurement Aim: Describe density and how it is measured. Do Now: 1.Copy the topic, aim and homework 2.Take out the blue Mass Sheet from yesterday.

Density. Take a look at the two boxes below. Each box has the same volume. If each ball has the same mass, which box would weigh more? Why?

2.7 Density Learning Goal Calculate the density of a substance; use the density to calculate the mass or volume of a substance. Objects that sink in water.

Density Density: the ratio of the mass of an object to its volume.

DENSITY Density is defined as mass per unit volume. It is a measure of how tightly packed and how heavy the molecules are in an object. Density is the.

Density- notes page 21 Essential Question: How do we explain density?

Chapter 1 Measurements 1.8 Density.

DENSITY - an important and useful physical property

Density- Cornell notes page 21

Chapter 2 Measurements 2.8 Density

WARM UP (for NOTES) 1. Which is more dense, water or wood?

Will it Float or Sink? Density.

Density Review.

Mass Mass: the measurement of How Much matter is in an object Units = grams (kg  mg)

Chapter 1 Measurements 1.7 Density

Determining if an object will float or sink

Density -density is the amount of stuff in a given volume; it is symbolized as ρ -it is mass per volume; note that units can be virtually any mass or volume.

Physical Science Density Challenge 2

Chapter 1 Measurements 1.7 Density

(Characteristic property)

Characteristic physical properties

Chapter 3: Measurement: Density

Viscosity Is the resistance to flow Is an Intensive Property Example:

What weighs more a ton of bricks or a ton of feathers?

Density Practice Problems

Presentation transcript:

Density: 1. Which is more dense, water or wood? How do you know? 1 pound of lead or 100 pounds of lead? Wood, if it sinks in water. Water, if the wood floats. SAME! because… 1

Density: m V D = rise run mass volume slope = ratio of mass to volume If you have lots of mass, but little volume (very dense) If little mass, but lots of volume (not dense) rise run mass volume slope =

Density depends only on the substance, not the size of the sample. 1 piece Aluminum D = 2.70 g/cm3 2 equal pieces Aluminum D = ??? g/cm3 1 ton of lead of 1 lb of lead is same density, both sink same with balsa wood, both float D = 2.70 g/cm3 Density depends only on the substance, not the size of the sample.

MUST write what’s in blue for work Calculating Density A copper block has a mass of 42.7 g. What is the density of copper? MUST write what’s in blue for work H = 1.9 cm m V W = 1.1 cm D = L = 2.3 cm V = L x W x H D = 42.7 g V = (2.3)(1.1)(1.9) 4.8 cm3 V = 4.8 cm3 D = 8.9 g/cm3

MUST write what’s in blue for work Calculating with Density A cup of llama snot has a volume of 100. mL, and a density of 1.58 g/mL. What is the mass of the llama snot? m V MUST write what’s in blue for work D = equation 1.58 = m . 100. #’s sub in (1.58)(100.) = m boxed answer m = 158 g 5

MUST write what’s in blue for work equation Calculating with Density What is the volume of 425 g of a solution with a density of 17.5 g/mL ? m V D = #’s sub in 17.5 = 425 V MUST write what’s in blue for work (17.5)V = 425 V = 425 17.5 boxed answer V = 24.3 mL 6

Quick Quiz! Quiz - Density